I performed a performance maintenance on the HVAC system. The homeowner reported issues with the air conditioner. I conducted combustion analysis, temperature split, and static pressure tests, finding excessive static pressure. I calibrated the furnace gas valve and verified all mechanical and electronic components. The blower and heat exchanger were checked, and the humidifier was verified operational. I switched to cooling, measured temperature split and static pressure, and checked the condenser. The system was overcharged with refrigerant, so I rinsed the condenser coil and adjusted the pressures to specifications. The furnace, humidifier, and air conditioner are now operational.